William t



(No Model.)

W. T. LYMAN.

' GALVANIO BATTERY.

No. 324,475. Patented Aug. 18, 1885.

N PETERs Pnnmuahu w, Wnhi ooooo a UNITE STATES PATENT OFFICE.

WILLIAM T. LYMAN, OF ANSONIA, CONNECTICUT, ASSIGNOR TO THE ANSON IABRASS AND COPPER COMPANY, OF SAME PLACE.

GALVANIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 324,475, dated August18, 1885.

Application filed April 13, 1885.

To aZZ whom it may concern:

Be it known that I, WILLIAM T. LYMAN, of Ansonia, in the county of NewHaven and State of Connecticut, have invented an Improvement in GalvanicBatteries, of which the following is a specification.

The copper plates in galvanic batteries have been made of sheet metal,and the conductor has been connected to the same by a rivet; but thepressure of the rivet upon the wire conductor flattens out such wire andlessens its strength, so that the conductor is liable to break ofl nearthe rivet. In galvanic batteries the conductor is usually insulated by asurrounding tube of gutta-percha; but the same only extending to the topedge of the cipper plate leaves the wire of the conductorezposed to theaction of the acid, and it sometimes happens, through inattention, thatthe lower end of the conductor is eaten away near the top edge of thecopper plate.

My invention is made for avoiding the aforesaid risks of injury, and foreffecting a more reliable connection between the copper plate and theconductor of the same. In thedrawings, Figure 1 is a perspective view ofthe copper plate and the conductor connected with the same, and Fig. 2is a section in larger size through the conductor and copper plate.

The copper plates'are of any desired shape. Usually, they are ofsheet-copper comparativel y thin, with one central sheet, A, and twoside sheets, B C, united together by a rivet or rivet-s at E. Theconductor F is made of cop per wire, 2', incased in a tube ofgutta-percha, o. The plate A of copper at one end is stamped up in a dieso that a groove is formed at p for the copper wire i to pass through,and a groove is formed at r of a size adapted to receive theinsulating-tube 0. These grooves 19 and 7' stand in opposite directions,and the copper plate A is perforated at s t, so that the copper wire z'can be passed vertically through the perforation 8, along the groove 10,through the perforation t, and down at the side of the plate A, and thelower end of said wirei' is turned up beneath the lower edge of saidplate A, so as to hold the copper conductor firmly (No model.)

to the plate A. As the conductor is thus entered into its place, theinsulating-tube 0 passes along in the groove r, and as thisinsulatingtube 0 extends down as low, or nearly so, as the middle of theplate A, the conductor is protected from the action of any sulphite ofzinc that may be allowed to accumulate in the battery-cell, and the wire1; is not injured, and is not liable to be broken in handling the partsof the battery, because the wire is not compressed at any place so as tobe made smaller, and the groove or channel r receives the insulatingportion of the conductor and forms a support for the same. The wired isin contact with the plate A for a considerable distance; hence theelectric connection is of the most perfect character, and the deposit ofcopper renders this connection still more perfeet.

I claim as my invention 1. The combination, with the copper plate in agalvanic battery, having a hole through said plate, of a wire conductorand an insulating-covering thereto, that extends down the copper plateto about half its width, and saidx; wire passing through such hole andsecured, 7F substantially as set forth. 1

2. The combination, in a galvanic battery, of a copper plate containinga groove for the 7 reception of the wire, and having holes through. suchplate for the passage of said wire, and a conductor having aninsulating-covering eX- i tending down the copper plate about half itswidth, and the wire passed into such holes, substantially as set forth.

3. In a galvanic battery, a copper .plate perforated and grooved for thereception of the copper conductor, said conductor passing through theperforation and down below the lower edge of the copper plate, and beingsecured by the lower end of the conductor being turned up, substantiallyas specified.

Signed by me this 1st day of April, A. D. 1885.

WILLIAM T. LYMAN.

Witnesses:

HENRY COOPER, I. E. STODDARD.

